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Abstract Detail



Symposium: Speaking of Food: connecting basic and applied science

Ellstrand, Norman [1].

When good crops go bad: the evolution of invasives and weeds from food plants.

Comparing new invasives and new weeds with their benign progenitors can provide insights into the evolutionary pathways enabling ecological change. Feral food plants that have evolved invasiveness are ideal platforms for investigation because their ancestors are so well studied. I present three contrasting case studies of problematic plants that evolved from feral ancestors over the last century: California wild radish, Great Basin weedy rye, and California wild artichoke thistle. Then I review about 20 independent cases of invasive/weed evolution from feral food plants, both problem plants directly evolved from crops (endoferality) as well as those that evolved following hybridization between a crop and a wild relative (exoferality). The trends emerging from the review suggest avenues for future research.

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1 - University of California, Department of Botany & Plant Sciences, UCR, Riverside, CA, 92521-0124, USA

Keywords:
invasive species
Evolution
Weed
crop wild relative
crop
feral.

Presentation Type: Symposium or Colloquium Presentation
Session: SY06
Location: Grand Ballroom A/Riverside Hilton
Date: Tuesday, July 30th, 2013
Time: 10:30 AM
Number: SY06005
Abstract ID:1150
Candidate for Awards:None


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